中华人民共和国国家环境保护标准HJ975-2018固体废物 苯系物的测定顶空-气相色谱法Solid waste—Determination of benzene and its analogies— Headspace-gas chromatography（发布稿）本电子版为发布稿请以中国环境出版社出版的正式标准文本为准2018-11-13发布2019-03-01实施发布生态环境部目次前言.................................................................................................................................................ii1适用范围.........................................................................................................................................12规范性引用文件.............................................................................................................................13方法原理.........................................................................................................................................14试剂和材料.....................................................................................................................................15仪器和设备.....................................................................................................................................26样品.................................................................................................................................................27分析步骤.........................................................................................................................................48结果计算与表示.............................................................................................................................59精密度和准确度.............................................................................................................................610质量保证和质量控制...................................................................................................................711废物处理.......................................................................................................................................7附录 A（规范性附录）方法的检出限和测定下限.............................................